Altanator in car is good but battery still dies

Fuse Box Diagram Chevrolet Monte Carlo (2000-2005)

Fuse-Box.info https://fuse-box.info > chevrolet > chevrolet-monte-ca...

Here you will find fuse box diagrams of Chevrolet Monte Carlo 2000, 2001, 2002, 2003, 2004 and 2005, get information about the location of the fuse panels ...

hi Shellie.
this link should show you a video on how to do it.
plus you will be able to read up on it just below the video.
its not saying its a Ls.but see if this is the one.

The video above shows you how to replace the battery in your 1999 Chevrolet Monte Carlo. We recommend changing the battery in Chevrolets every 4 years. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a dead battery in your Monte Carlo that you need to replace.

Replacing the battery in your Monte Carlo involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some Monte Carlos, you may need to re-enter a security code to get your radio to work again. Check for this code in your owners manual - it will usually be either a sticker or small card in the booklet. If you can't find it, call Chevrolet and they will give you the code for free. In many Chevrolets, the transmission "learns" how you drive over time and makes adjustments, so you may experience altered driving dynamics as your car re-learns your driving style after changing the battery.

Battery Replacement 1995 1999 Chevrolet Monte Carlo 1999 Chevrolet Monte...
or go to this link for more videos.
how to change the battery in my 1995 Monte Carlo Ls Google Search

Check your fuses

Wheel studs. . Thake hub or axel off car.
Using a hand held sledge hammer, drive out wheel studs toward the center of car, as if it we still on.
Install new wheel studs the same way bottoming them with the sledge hammer.

I would need more information to give you a good answer. I need to know how long will it stay running a few seconds an hour what is it. I had a 2000 blazer that would start fine everyday and i would 10 minutes and it died sometimes i drove an hour and it died. I parked it and everytime i started it would run about 10-15 minutes and die. after it would die i would check fuel pressure which was good and spark. Well turns out there's no spark so i changed coil ,plugs, wires, rotor. I finally changed the crankshaft positioning sensor and that tuned out to be the problem so good luck.

BAD STARTER COIL PACK SPARK PLUGS WIRES ALTERNATOR BATTERY WIRES/CABLES ETC

try contacting the dealer.I did this about 10 years ago with an 85 nissian 300zx and they sent me new carpet and it fit perfect. Also try contacting auto part stores. You private small auto parts store usually know more. Also check into restoring car websites. Carpet stores really cant help.

If you have 2 motor mounts on the front of the engine attaching it to the front of the car remove the mount bolt tie something a come along to the motor it will roll over toward the front of the car making it easy to work on the back of the motor

Most likely, this is your starter bendix going bad. Time for a new starter. Hope this helps. Good luck.

i am haveing the same problem... i have removed all the fusses the car doesnt need to start .. ive put 4 new batteries and an altenator in the car.. and it wont hold a charge .. i disconnect the battery at night and thats the only way the battery will hold a charge..